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8049495181 = 713231321739
BaseRepresentation
bin1110111111100100…
…11000110010001101
3202202222112201112011
413133302120302031
5112441132321211
63410424341221
7403321402660
oct73762306215
922688481464
108049495181
113460803962
121687914811
139b3882800
145650ad6d7
15321a25921
hex1dfc98c8d

8049495181 has 24 divisors (see below), whose sum is σ = 9993791040. Its totient is φ = 6348191616.

The previous prime is 8049495149. The next prime is 8049495199. The reversal of 8049495181 is 1815949408.

It is not a de Polignac number, because 8049495181 - 25 = 8049495149 is a prime.

It is a super-2 number, since 2×80494951812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8049495101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 359410 + ... + 381148.

It is an arithmetic number, because the mean of its divisors is an integer number (416407960).

Almost surely, 28049495181 is an apocalyptic number.

It is an amenable number.

8049495181 is a deficient number, since it is larger than the sum of its proper divisors (1944295859).

8049495181 is a wasteful number, since it uses less digits than its factorization.

8049495181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22085 (or 22072 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 49.

The square root of 8049495181 is about 89718.9789342255. The cubic root of 8049495181 is about 2004.1161213776.

The spelling of 8049495181 in words is "eight billion, forty-nine million, four hundred ninety-five thousand, one hundred eighty-one".

Divisors: 1 7 13 91 169 313 1183 2191 4069 21739 28483 52897 152173 282607 370279 1978249 3673891 6804307 25717237 47630149 88455991 619191937 1149927883 8049495181